Ncert solutions

Ncert solutions

Grade 8

Mensuration | Exercise 11.3

Question 10

Q10) A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface of the container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the label.

Solution 10:

For the cyclindrical container the label will have raidus = \frac{14}{2}\ cm\ =7cm

height = 20cm -2cm -2cm

=16cm

The area of label = lateral surface area

= 2\pi rh

=2\times\frac{22}{7}\times7\times16

=704\ cm^2

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subject-cta

Question 10

Q10) A company packages its milk powder in cylindrical container whose base has a diameter of 14 cm and height 20 cm. Company places a label around the surface of the container (as shown in the figure). If the label is placed 2 cm from top and bottom, what is the area of the label.

Solution 10:

For the cyclindrical container the label will have raidus = \frac{14}{2}\ cm\ =7cm

height = 20cm -2cm -2cm

=16cm

The area of label = lateral surface area

= 2\pi rh

=2\times\frac{22}{7}\times7\times16

=704\ cm^2

Still have questions? Our expert teachers can help you out

Book a free class now

Want to top your mathematics exam ?

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Book a free class now
subject-cta
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